diff --git a/libveriuser/veriusertfs.c b/libveriuser/veriusertfs.c
index 835c448be..96b883588 100644
--- a/libveriuser/veriusertfs.c
+++ b/libveriuser/veriusertfs.c
@@ -18,7 +18,7 @@
  *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
  */
 #ifdef HAVE_CVS_IDENT
-#ident "$Id: veriusertfs.c,v 1.13 2003/06/17 22:09:45 steve Exp $"
+#ident "$Id: veriusertfs.c,v 1.14 2003/06/25 04:04:19 steve Exp $"
 #endif
 
 /*
@@ -58,6 +58,7 @@ void veriusertfs_register_table(p_tfcell vtable)
       p_tfcell tf;
       s_vpi_systf_data tf_data;
       p_pli_data data;
+      char trace_buf[1024];
 
       if (!pli_trace && (path = getenv("PLI_TRACE"))) {
 	    if (strcmp(path,"-") == 0)
@@ -68,7 +69,7 @@ void veriusertfs_register_table(p_tfcell vtable)
 			perror(path);
 			exit(1);
 		  }
-		  setlinebuf(pli_trace);
+		  setvbuf(pli_trace, trace_buf, _IOLBF, sizeof(trace_buf));
 	    }
       }
 
@@ -388,6 +389,9 @@ PLI_INT32 tf_setrealdelay(double dly)
 }
 /*
  * $Log: veriusertfs.c,v $
+ * Revision 1.14  2003/06/25 04:04:19  steve
+ *  Fix mingw portability problems.
+ *
  * Revision 1.13  2003/06/17 22:09:45  steve
  *  Better trace of PLI1 registration.
  *
diff --git a/vvp/main.cc b/vvp/main.cc
index c40b68f0c..dc2d5acb9 100644
--- a/vvp/main.cc
+++ b/vvp/main.cc
@@ -17,7 +17,7 @@
  *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
  */
 #ifdef HAVE_CVS_IDENT
-#ident "$Id: main.cc,v 1.37 2003/06/13 19:51:08 steve Exp $"
+#ident "$Id: main.cc,v 1.38 2003/06/25 04:04:19 steve Exp $"
 #endif
 
 # include  "config.h"
@@ -55,6 +55,7 @@ extern "C" const char*optarg;
 
 bool verbose_flag = false;
 
+static char log_buffer[4096];
 
 #if defined(HAVE_SYS_RESOURCE_H)
 static void my_getrusage(struct rusage *a)
@@ -197,7 +198,7 @@ int main(int argc, char*argv[])
 		        perror(logfile_name);
 		        exit(1);
 		  }
-		  setlinebuf(logfile);
+		  setvbuf(logfile, log_buffer, _IOLBF, sizeof(log_buffer));
 	    }
       }
 
@@ -276,6 +277,9 @@ int main(int argc, char*argv[])
 
 /*
  * $Log: main.cc,v $
+ * Revision 1.38  2003/06/25 04:04:19  steve
+ *  Fix mingw portability problems.
+ *
  * Revision 1.37  2003/06/13 19:51:08  steve
  *  Include verbose messages in log output.
  *
diff --git a/vvp/vpi_priv.cc b/vvp/vpi_priv.cc
index 4c3f21de8..2d2b3e0d7 100644
--- a/vvp/vpi_priv.cc
+++ b/vvp/vpi_priv.cc
@@ -17,7 +17,7 @@
  *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
  */
 #ifdef HAVE_CVS_IDENT
-#ident "$Id: vpi_priv.cc,v 1.42 2003/06/22 04:19:26 steve Exp $"
+#ident "$Id: vpi_priv.cc,v 1.43 2003/06/25 04:04:19 steve Exp $"
 #endif
 
 # include  "vpi_priv.h"
@@ -337,6 +337,8 @@ void vpi_set_vlog_info(int argc, char** argv)
     vpi_vlog_info.argc    = argc;
     vpi_vlog_info.argv    = argv;
 
+    static char trace_buf[1024];
+
     if (const char*path = getenv("VPI_TRACE")) {
 	  if (!strcmp(path,"-"))
 		vpi_trace = stdout;
@@ -346,7 +348,7 @@ void vpi_set_vlog_info(int argc, char** argv)
 		      perror(path);
 		      exit(1);
 		}
-		setlinebuf(vpi_trace);
+		setvbuf(vpi_trace, trace_buf, _IOLBF, sizeof(trace_buf));
 	  }
     }
 }
@@ -644,6 +646,9 @@ extern "C" void vpi_control(int operation, ...)
 
 /*
  * $Log: vpi_priv.cc,v $
+ * Revision 1.43  2003/06/25 04:04:19  steve
+ *  Fix mingw portability problems.
+ *
  * Revision 1.42  2003/06/22 04:19:26  steve
  *  vpi_handle diagnostic message.
  *
diff --git a/vvp/vvp.def b/vvp/vvp.def
index 7c4c5cf69..16ca5a6ee 100644
--- a/vvp/vvp.def
+++ b/vvp/vvp.def
@@ -17,11 +17,10 @@ vpi_handle_by_index
 vpi_handle_by_name
 vpi_iterate
 vpi_mcd_close
-vpi_mcd_fgetc
-vpi_mcd_fputc
 vpi_mcd_name
 vpi_mcd_open
 vpi_mcd_printf
+vpi_mcd_vprintf
 vpi_printf
 vpi_put_userdata
 vpi_put_value